Vocabulary Wordsresearch - careful study of a subject or problemtools - things people use to help them do a jobfamiliar - well known from being seen oftengadget - a small, useful machine or deviceinvention - an original device, system, or processexperiment - a test to find out or prove somethingelectric - powered by electricity, a form of energy caused by the motion of electrons and protonspower - strengthprove - to show by using factsimprove - to get better